Yonaguni Monument
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Yonaguni Island, Japan
Best timeDecember to March
Water temp22-25°C / 72-77°F
Visibility15-30m / 50-100ft
AccessBoat Dive
Dive typesScuba
DifficultyAdvanced
Max depth25 m
Avg depth18 m
Nearest airportOGN
Mysterious underwater structureHammerhead sharks
Scuba
Off the coast of Japan's southernmost island lies the Yonaguni Monument, a massive, terraced rock formation that some believe to be a man-made, ancient sunken city. It's a mysterious and fascinating dive, and the area is also known for schooling hammerheads in winter.
Features
A controversial underwater rock formation featuring massive, flat terraces and sharp, right angles. Its origins are debated (natural vs. man-made). The dive is challenging due to very strong currents. Schooling hammerhead sharks are also a major attraction in winter.
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